<div class="input-group mt-3 mb-3 w-50 mx-auto">
    <input id="input-search-role" type="text" class="form-control" placeholder="请输入商品名称"
           aria-describedby="btn-search-role">
    <button class="btn btn-primary" type="button" id="btn-search-role" onclick="searchRole()">搜索</button>
</div>

